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  4. In an alternating current circuit consisting of elements in series, the current increases on increasing the frequency of supply. Which of the following elements are likely to constitute the circuit?

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Q. In an alternating current circuit consisting of elements in series, the current increases on increasing the frequency of supply. Which of the following elements are likely to constitute the circuit?

Alternating Current

Solution:

Reactance of a capacitor, $X_{C}=\frac{1}{\omega C}=\frac{1}{2\pi\upsilon C}$
As frequency increases, $X_C$ decreases and therefore current increases. As $R$ does not vary with frequency, therefore, likely elements constituting the circuit may be capacitor and resistor.